63e88f80
 Hu Chunming
提交三方库
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
/*!
@file
Forward declares `boost::hana::members`.
Copyright Louis Dionne 2013-2022
Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
*/
#ifndef BOOST_HANA_FWD_MEMBERS_HPP
#define BOOST_HANA_FWD_MEMBERS_HPP
#include <boost/hana/config.hpp>
#include <boost/hana/core/when.hpp>
namespace boost { namespace hana {
//! Returns a `Sequence` containing the members of a `Struct`.
//! @ingroup group-Struct
//!
//! Given a `Struct` object, `members` returns a `Sequence` containing
//! all the members of the `Struct`, in the same order as their respective
//! accessor appears in the `accessors` sequence.
//!
//!
//! Example
//! -------
//! @include example/members.cpp
#ifdef BOOST_HANA_DOXYGEN_INVOKED
constexpr auto members = [](auto&& object) {
return tag-dispatched;
};
#else
template <typename S, typename = void>
struct members_impl : members_impl<S, when<true>> { };
struct members_t {
template <typename Object>
constexpr auto operator()(Object&& object) const;
};
BOOST_HANA_INLINE_VARIABLE constexpr members_t members{};
#endif
}} // end namespace boost::hana
#endif // !BOOST_HANA_FWD_MEMBERS_HPP
|
